Unformatted text preview: IRP; v35; n1, pp.381-386 This page intentionally blank Tolerance Synthesis of Higher Kinematic Pairs
M.-H. Kyung, E. Sacks Computer Science, Purdue University, USA [email protected] Abstract: We present a tolerance synthesis algorithm for mechanical systems comprised of higher kinematic pairs. The input is a parametric model of a mechanical system (part proﬁles and system conﬁguration) with initial tolerance intervals for the parameters. The output is revised tolerances that guarantee correct kinematic function for all system variations. Nominal parameter values are changed when possible and tolerance intervals are shrunken as a last resort. The algorithm consists of a three-step cycle that detects and eliminates incorrect system variations. The ﬁrst step ﬁnds vectors of parameters values whose kinematic variation is maximal. The maximums of the higher pairs are derived by contact zone construction then are combined into system maximums. The second step tests the vectors for correct kinematic function using conﬁguration space matching and kinematic simulation. The third step adjusts the tolerances to exclude the vectors with incorrect functions. The cycle repe...
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This note was uploaded on 08/03/2010 for the course DD 1234 taught by Professor Zczxc during the Spring '10 term at Magnolia Bible.
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